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100 ft. 18/2 Brown Solid CU CL2 Thermostat Wire

Covers 100 ft. (19¢ /ft.)
$19.43
  • Indoor and outdoor use
  • Heating and air conditioning controls
  • 2-conductor cable is flat and multi-conductor cables are round
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Product Details

18/2 Solid Copper Class-2 Thermostat/Bell Wire and Cable Installation Information

For Use in Heating and Air Conditioning Controls

SIMpull Thermostat Wire is a class 2 power-limited circuit cable for use in thermostat control applications. Learn More.

18/2 Solid Copper Class-2 Thermostat/Bell Wire and Cable Operation Information

Pulls Smoothly for Faster and More Efficient Installations

Strips easier, resists tearing, and reduces burn-through resulting in time labor and material savings. Learn More.

Southwire Thermostat Wire and Cable Assortment (Thermostat/Bell Wire)

Thermostat Wire

Multi-purpose wire for HVAC installations. Learn More.

Southwire Romex Non-Metallic Building Wire and Cable Assortment

Variety of Gauges Available

Available in 2 to 14 gauge. Learn More.

Southwire THHN-THWN Wire and Cable Assortment (Solid & Stranded)

THHN in a Variety of Colors

Available in stranded or solid conductors. Learn More.

Southwire Soft Drawn Bare Copper Grounding Wire and Cable Assortment (Solid & Stranded)

Bare Copper

For residential grounding. Learn More.

Secure Thermostat/Bell Wire and Cable Assortment with Electrical Staples

Wire Staples

Use Romex brand wire staples to secure NM cable. Learn More.

Southwire Clamp Cable Ties and Universale Cable Ties Assortment (2 in. - 14 in.)

Cable Ties

Secure wire bundles and harness components quickly on the jobsite. Learn More.

Southwire Titan Liquidtight Conduit & Ultratight Liquidtight Conduit Assortment

Liquidtight Conduit

We offer a wide range of durable liquidtight metallic or non-metallic conduits. Learn More.

Southwire Straight Type-B Conduit Fittings and 90-Degree Type-B Conduit Fittings Assortment

Liquidtight Fittings

Straight and 90º Non-Metallic Liquidtight Fittings in a range of sizes. Learn More.

Southwire Low-Voltage Copper Direct Burial Sprinkler Wire and Cable Assortment

Sprinkler Wire

Connect your outdoor sprinkler and landscape lighting. Learn More.

Southwire - Woods Photocell Light Controls Assortment (Hardwired & Plug-In)

Photocell Light Control

2,000 Watt outdoor in-wall photocell light control. Learn More.

Southwire Company 100 ft. 18/2-Gauge Thermostat Wire is made of solid, copper conductors that feature a 6 mil thick brown, PVC jacket. This wire is flame retardant and UL listed. Can be used in temperatures up to 140ËšF.

Additional Resources

From the Manufacturer

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Specifications

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Questions & Answers

11Questions
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Q:Is this the wire needed for a honeywell WI Fi thermostat
by|Apr 22, 2022
4 Answers
Answer This Question

A:  This is the wire that runs from your furnace / air handler to your thermostat location.

by|Apr 24, 2022

    A:  Yes but this is only 2 wires..you'd be better off with 18/5 so you can plug into each required jack (r1, y, c, etc.). Best to consult a local professional

    by|Apr 24, 2022

      A:  This thermostat wire is very durable solid copper, and I used it for the thermostats on 2  free standings natural gas stoves for heating my basement. If your digital thermostat only requires two wires, then this will be perfect. Some furnace applications require four or more wires. Remove your old thermostat from the wall and see how many wires are Required.If your old thermostat was working you can reuse the old wire.

      by|Apr 23, 2022

        A:  No, you should use whatever wiring you already have installed. Generally no new thermostat wiring is needed for a new wi fi thermostat. Unless none exists.

        by|Apr 25, 2022
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          Q:Will this work for a sprinkler valve?
          by|Dec 10, 2021
          1 Answer
          Answer This Question

          A:  This product is recommended for heating and air conditioning controls and thermostats. Please contact our experts at CableTechSupport@southwire.com for assistance regarding if other uses are meeting requirements and codes.

          by|Dec 13, 2021
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            Q:I have a 10,000 watt, 240 garage heater. External thermostat is a two wire Honeywell?will this wire work?
            by|Nov 27, 2021
            1 Answer
            Answer This Question

            A:  Yes it will!

            by|Dec 2, 2021
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              Q:Can this be used to connect to plug in electric transformer for a sensi thermostat- i only have a 2 wire ( no common wire) connection to my old tstat
              by|Oct 19, 2020
              1 Answer
              Answer This Question

              A:  We are happy to help! Please consult with our team at cabletechsupport@southwire.com for further assistance.

              by|Oct 19, 2020
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                Customer Reviews

                4.7 out of 5
                (131)
                • 4.7
                  out of 131 reviews
                • 94% recommend this product
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                Showing 1-10 of 131 reviews
                Used this for wiring a door bell system with 3 chimes and 2 door bell cameras as the gauge of the...
                Used this for wiring a door bell system with 3 chimes and 2 door bell cameras as the gauge of the wire is slightly larger and handles the power consumption better. Works great!
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                • Verified Purchase
                • Recommended
                I had NJR install all new furnace and new water heater. They stapled through my existing wire num...
                I had NJR install all new furnace and new water heater. They stapled through my existing wire numerous times rerouting it for the exhaust on the new power vent unit. I had to run new wire from new transformer up to chime and then from chime to doorbell wire where it was still ok. It works flawlessly for my Ring Doorbell Pro! I do recommend this product.
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                        Employees very helpful Big thanks to Ed and Jerome
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                            Needed to add an additional garage door button. This...
                            Needed to add an additional garage door button. This wire was the perfect solution to add the switch/button. Strips easily and is a solid strand, perfect for the application.
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                            • Verified Purchase
                            Showing 1-10 of 131 reviews